Stickee



(No Model.)

C.M;P;BLST1CKER,; MAGHINBPOR DRAWING RODS YA'Nn TUBES.

j Patented,Mayl5,.'1188,8.L1, i

Carl, Marzia, Pzlelscker. I

Wim www..

v e m UNITED vS11/riens 'PATENTA i OFFICE. l il CARL MARIA PlnLsrroKnR,OF LONDON, COUNTY on MIDDLESEX, ENGLAND.y

MACHINE-FOR' DRAWING RODS AND TUBES.

SPECIFICATION forming part of Letters Patent No. 382,729, dated May l5,1888.

Appllootlon nloa soptenlbor 5, leer. sonni No. '248.875, (No rnoaol.)patenten ln England July 14, less, No.9,114, and' ln' Gonmnny August 4,1886, No. 39,156.

To aZZ whom it may concern.:`

Be it known that I, CARL MARIA BIEL- sTIoKER, a subject of the Queen ofGreat Britain, residing at London', in the county of Middlesex andKingdom of England, have invented certain new and useful Improvements inMachinery for Cold-Drawing Rods and Tubes, (for which I haveobtained apatent in Great Britain, No. 9,174, bearing date July 14,1886,and xo inGermany, dated August 4, 1886, N o. 89,156,) of which the following is aspecification.

My invention relates to' an improved machine for cold=drawing rods andtubes, whereby not only is the production increased to twice that ofother machines nowin use,but also rods of any length can be drawn. Inaddition to which, from the' construction of my apparatus, the diethrough which the tube or rod is drawn is rendered absolutelyself-centering, whereby 2o I am-enabled to produce rods and tubes of oneuniform section and practically flee from crooks or bends. u

And in order that my invention may be better understood,reference is hadto the accom panying sheet of drawings, upon which- Figure 1 representsa side elevation of onehalf of a duplex machine embodying myimprovements, Fig. 2 being a plan of the same. Fig. 3 is a transversesection as seen through 3o line 12. Fig. 4 is a transverse section asseen through line 3 4. o Fig. 5 is a transverse section as seen throughline 5 6.

Ais ascrewed shaft working within the wheel C; B B,housing forworm-wheel. C is a wormwheel arranged to revolve within the housing B B.D is a screwed bush or nut secured within the wheel C; E, worm in gearwith wheel C; e, worm-shaft; F, spur-wheel; G, pinion in gear with same;g, drivingshaft; H, 4o cross-head secured upon each end of thescrewshaft A; I I, guiderollers secured upon each side of cross-head H;K, guides on girders for crosshead H. LL are two girders or strutsextending from housing B to die-plate O; M M, grippers or jaws forholding rod to be drawn; N, rod or bar to be drawn 5y O, plate forsecuring die; oo, studs or pivots secured upon same; P, swing-frame; pp, studs or pivots secured upon same and fitted within the girders orside 5o frames, L'L; Q, the die, R B', pulleys for driving-shaft.

My improved machine may be either single or'lduplex. For convenience-ofillustration, o nepart only, or the parts constituting a single machine,are hereinshown, itbeing obviously sufficient to state that the d uplexmachineconsists of a duplication of the` partsgsllown for ward 'of thehousings, Figs. 1 and 2.

p In "construction my machine consists, essen- Y tially, ofascrewshaft,A, arranged to work within a worm-wheel, C, revolving on suitablebearings mounted in the housings B B. This worm-wheel C isprovidedwithin the boss with? a nut lor thread, D, c'orrespondingwith the threadof the screwshaft A, and engages with 6: the worm E upon the shaft e,motion being imparteditheret'o by means of the spurwheel F andpinion G.

.The .screws-shaft A receives a backward or forward movement accordingto the direction .70 v

in which thewheel C is made to revolve, and has secured upon it asuitable cross-head, H, provided with guide-rollers I I, arranged torunupon a flange or rod, K, attached to the side frames, L L. Within thecross-head H is a pair of steel jaws, MM, for the purpose of grippingthe rod or tube N to be operated upon.

At the opposite end of the frame is the dieseat O. This die-seat.consists of ajverticallypivoted plate, O, arranged within an outer 8cframe, l?, the latter being pivoted horizontally within suitablebearings on the side supporting-frames, LL. Y Within thisl plate O isthe die Q, through` which the rod N is drawn.` By

this arrangement the die is free to moveslightly in a vertical orhorizontalY direction, so as to admit of its adjusting itself tothelineof draft at all times.

When the bar to be drawn is inserted in the die and caught between thejaws M M,it is evi- -go dent that as soon as theslightest pull isexerted by moving the screw-shaftfA the center of the die Q will placeitself accurately in aline with the center of the rod N andthescrew-shaftA, and in consequence any crooks or' bendsl will 95 beobviated and thebar require but little orf no Y -straightening at all.

By making tho screw-shaft A hollow nous of any length can be drawn.

By drawing the length ofthe screw-shaft, then `loe causing the latter totravel back again,the drawn part of the rod passing then inside thehollow shaft, and by clutching a furtherlength of the rod the drawingoperation is repeated until the entire length has passed through thedie.

The rods being drawn through a die of a smaller diameter than their ownsection are compressed, and in consequence their textile strength andelastic limit greatly increased, while the surface is equal to that ofturned shafting. At the same time, the die being absolutelyself-centering, they are perfectly straight and at once tit for all usesfor which turned rods are now required,without any further truing ormanipulation.

Having fully described my invention, whatI c1aim,and desire to secu reby Letters Patent of the United States, is-

l. In a machine for cold-drawing rods and tubes, the combination of ascrew-shaft carrying'a cross-head and gripping-jaws, means forreciprocating said screw-shaft, longitudinal frames supporting thecross-head, and a selfcentering drawing-die mounted between theextremities'of the frames, substantially as described.

2. In a machine for cold-drawing rods and tubes, the combination of ahollow screw-shaft carryingacross-head and gripping-jaws,means forreciprocating said screw-shaft,longitudinal side frames supporting thec`ross-head,and a die secured between the extremities of the sideframes, substantially as described.

3. In a machine for cold-drawing rods and tubes, the combination of ascrew-shaft provided with a crosshead and gripping-jaws,and means forreciprocating said shaft, side frames provided with lateral guidingsurfaces ar the frame, and a die-plate supported within the plate orseat, substantially as described.

5. In a machine for cold-drawing rods and tubes, a self-centering die ina support comprising the horizontally-pivoted frame P, the die-holdingplate or seat O, vertically pivoted within the frame P, and a die-plate,Q, snpported within the plate or seat O,longitudinal side frames betweenthe extremities of which the framePis pivot-allysupportcd,and acrosshead and gripper arranged to be reciprocated between the sideframes, substantially as described.

6. In a machine for cold-drawing rods and tubes, the combination of ascrew-shaft, a rotating nut on said screw, a worm-wheel engaging saidnut, a counter-shaft carrying a wormpinion engaging the worm-wheel, andsuitable driving-pulleys on the counter-shaft, a crosshead andgripping-jaws on the screw-shaft, longitudinal frame-pieces providedwith guides for the cross-head, and a drawingdie supported between theextremities of the framepieces, substantially as described.

CARL MARIA PIELSTICKER.

Witnesses:

JNO. DEAN. HERBERT E. DALE, Both of No. I7 Gracecz/urchStreet, London.

